Buckle mechanism of dust collecting barrel of two-stage dust collector

ABSTRACT

A buckle mechanism of a dust collecting barrel of a two-stage dust collector is provided. The buckle mechanism is disposed on the two-stage dust collector, and includes a first retaining seat and a second retaining seat corresponding to one side of the dust collector, and a support unit is disposed on a barrel cover. The first retaining seat is pivotally connected with a linking unit. One end of the linking unit is connected to the support unit. The second retaining seat is pivotally connected with a control unit. The linking unit is driven to actuate through two connecting members. The control unit drives the linking unit to actuate. By the lever principle, the linking unit drives the barrel cover to move up and down so as to assemble and disassemble the dust collecting barrel quickly and conveniently.

FIELD OF THE INVENTION

The present invention relates to a dust collector, and more particularly, to a buckle mechanism which can assist a user in assembling and disassembling a dust collecting barrel of a dust collector quickly and conveniently.

BACKGROUND OF THE INVENTION

A dust collector is often used to collect and filter dust in the air to maintain the air quality of the environment. FIG. 1 is a perspective view of a conventional two-stage dust collector. The dust collector 200 has a machine stand 201. A wind guide barrel 202 is mounted on the machine stand 201. The peripheral side of the wind guide barrel 202 is formed with an air inlet 203 in the tangential direction. An air bellows 204 is provided above the wind guide barrel 202. The top surface of the air bellows 204 is provided with an air blower 205. A filter barrel 206 is connected to one side of the air bellows 204. A telescopic tube 207 is connected to the lower end of the wind guide barrel 202. The other end of the telescopic tube 207 is provided with a barrel cover 208 for covering a dust collecting barrel 209. When the air blower 205 is started, the air with dust in the environment will be sucked through the air inlet 203 into the wind guide barrel 202 due to the negative pressure. The air with dust is advanced along the inner wall of the wind guide barrel 202 to form a vortex and the dust in the air is thrown out by a centrifugal force for the dust to fall into the dust collecting barrel 209. Afterward, through the airflow generated by the air blower 205, the air is introduced into the filter barrel 206, so that the air is filtered through the filter barrel 206 and returned to the environment, thereby filtering out the air.

After a period of time, the dust collecting barrel 209 of the dust collector 200 needs to be cleaned or replaced due to dust accumulation. Thus, a detachable barrel cover 208 is provided on the dust collector 200. The peripheral side of the dust collecting barrel 209 is provided with a plurality of buckles 210. The buckles 210 are used for the barrel cover 208 to seal the dust collecting barrel 209 completely, so that the user can clean or replace the dust collecting barrel 209 conveniently. However, in order to ensure that the barrel cover 208 covers the dust collecting barrel 209 tightly, it is necessary to provide the buckles 210 between the barrel cover 208 and the dust collecting barrel 209. As a result, the user often takes a lot of time and needs a sufficient space to buckle or unbuckle the buckles 210 for assembling and disassembling the dust collecting barrel 209. It is inconvenient for use. Accordingly, the inventor of the present invention has devoted himself based on his many years of practical experiences to solve these problems.

SUMMARY OF THE INVENTION

The primary object of the present invention is to provide a buckle mechanism which can assist the user in assembling and disassembling a dust collecting barrel of a dust collector quickly and conveniently.

In order to achieve the aforesaid object, a buckle mechanism of a dust collecting barrel of a two-stage dust collector is provided. The buckle mechanism is disposed on the two-stage dust collector. The dust collector comprises a machine stand. The machine stand is provided with a wind guide barrel and a telescopic tube connected to a lower end of the wind guide barrel. Another end of telescopic tube is provided with a barrel cover. The buckle mechanism is connected to the barrel cover for controlling the barrel cover to seal the dust collecting barrel. The buckle mechanism comprises a first retaining seat, a second retaining seat, a support unit, a linking unit, a control unit, and two connecting members. The first retaining seat is disposed at an inner side of the machine stand. Two sides of the first retaining seat have first pivot ends, respectively. The second retaining seat is fixed to an outer side of the machine stand and is parallel to the first retaining seat. Two sides of the second retaining seat have second pivot ends, respectively. The support unit is disposed above the barrel cover. The support unit includes a support member. The support member has a central through hole for the telescopic tube to pass therethrough to be fixed to the barrel cover. Two sides of the support member have connecting portions, respectively. The linking unit is pivotally connected to the first retaining seat. The linking unit has first pivot portions corresponding to the first pivot ends.

The linking unit is pivotally connected to the first pivot ends of the first retaining seat through the first pivot portions. One end of the linking unit has a first connecting end. The first connecting end is connected to the connecting portions of the support unit. Another end of the linking unit has a second connecting end. The control unit is pivotally connected to the second retaining seat. One end of the control unit is pivotally connected to the second pivotal ends. Another end of the control unit is transversely provided with an operating rod. Two sides of the control unit each have a coupling portion at a central portion thereof. One end of each of the two connecting members is connected to the second connecting end of the linking unit. Another end of each of the two connecting members is connected to the coupling portion of the control unit. Thereby, the control unit is driven by the operating rod to actuate, the linking unit is driven to swing by the connecting members, and the support unit is driven to move the barrel cover up and down.

According to the buckle mechanism of the dust collecting barrel of the two-stage dust collector of the present invention, the control unit is driven by the operating rod to actuate, meanwhile, the linking unit is driven to swing by the connecting members. By the lever principle, the linking unit is moved up and down to control the upward and downward movement of the support unit so as to move the barrel cover up and down. The buckle mechanism can assist the user in assembling and disassembling the dust collecting barrel quickly and conveniently to improve the working efficiency greatly.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a conventional dust collector;

FIG. 2 is a perspective view of a dust collector in accordance with a preferred embodiment of the present invention;

FIG. 3 is a side view of the dust collector in accordance with the preferred embodiment of the present invention;

FIG. 4 is an exploded view of a buckle mechanism in accordance with the preferred embodiment of the present invention;

FIG. 5 is another exploded view of the buckle mechanism in accordance with the preferred embodiment of the present invention;

FIG. 6 is a schematic view in accordance with the preferred embodiment of the present invention when in use, showing the dust collecting barrel before mounted to the dust collector;

FIG. 7 is a schematic view in accordance with the preferred embodiment of the present invention when in use, showing that the dust collecting barrel is mounted to the dust collector but not sealed; and

FIG. 8 is a schematic view in accordance with the preferred embodiment of the present invention when in use, showing that the barrel cover is pressed downward and completely sealed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.

FIG. 2 is a perspective view of a dust collector in accordance with a preferred embodiment of the present invention. FIG. 3 is a side view of the dust collector in accordance with the preferred embodiment of the present invention. FIG. 4 is an exploded view of a buckle mechanism in accordance with the preferred embodiment of the present invention. FIG. 5 is another exploded view of the buckle mechanism in accordance with the preferred embodiment of the present invention. The present invention discloses a buckle mechanism for a dust collecting barrel of a two-stage dust collector. The buckle mechanism 100 is disposed on a two-stage dust collector 200. The structure of the dust collector 200 has been disclosed above in the paragraph of the prior art of the description of this application, and won't be described again. For convenience of explanation, the reference numbers of the dust collector 200 of the present invention are the same as those of the conventional dust collector 200. The buckle mechanism 100 comprises a first retaining seat 10, a second retaining seat 20, a support unit 30, a linking unit 40, a control unit 50, and two connecting members 60.

The first retaining seat 10 is fixed to an inner side of a machine stand 201. The first retaining seat 10 is a U-shaped plate body. One side of the first retaining seat 10, facing the machine stand 201, has a first retaining portion 11. The first retaining portion 11 is fixed to the inner side of the machine stand 201. Two sides of the first retaining seat 10 have first pivot ends 12, respectively.

The second retaining seat 20 is fixed to an outer side of the machine stand 201 and is parallel to the first retaining seat 10. The second retaining seat 20 is a U-shaped plate body. One side of the second retaining seat 20, facing the machine stand 201, has a second retaining portion 21. The second retaining portion 21 is fixed to the outer side of the machine stand 201. Two sides of the second retaining seat 20 have second pivot ends 22, respectively.

The support unit 30 is disposed on a barrel cover 208. The support unit 30 includes a support member 31. The support member 31 is a rectangular plate body. The support member 31 has a through hole 311 facing the barrel cover 208 for a telescopic tube 207 to pass therethrough. One end of the telescopic tube 207 is fixedly connected to the barrel cover 208. Two sides of the support member 31 are provided with connecting portions 312. The support member 31 is provided with a plurality of limit holes 313 around the periphery of the through hole 311. Each of the limit holes 313 is provided with a fixing rod 32. One end of the fixing rod 32 is fixed to the barrel cover 208. The other end of the fixing rod 32 is provided with a limit member 33. In the embodiment of the present invention, the limit member 33 is a nut. The limit member 33 is threadedly connected to the fixing rod 32. The fixing rod 32 is sleeved with an elastic member 34. The elastic member 34 is located between the support member 31 and the barrel cover 208. The support member 31 and the elastic member 34 are confined on the fixing rod 32 by the limit member 33.

The linking unit 40 is connected to the first retaining seat 10. The linking unit 40 is provided with two linking members 41. The two linking members 41 are arranged in parallel with each other. The two linking members 41 each have a first pivot portion 411 at a central portion thereof. The linking members 41 are pivotally connected to the first pivot ends 12 of the first retaining seat 10 through the first pivot portion 411. One end of each linking member 41 has a first connecting end 412. The first connecting ends 412 of the two linking members 41 are connected to the connecting portions 312 of the support member 31, respectively. Another end of each linking member 41 has a second connecting end 413.

The control unit 50 is connected to the second retaining seat 20. The control unit 50 includes two connecting rods 51. One end of each of the connecting rods 51 is provided with a second pivot portion 511. The second pivot portions 511 of the two connecting rods 51 are connected to the second pivot ends 22 of the second retaining seat 20, respectively. An operating rod 52 is transversely connected between the other ends of the two connecting rods 51. The two connecting rods 51 each have a coupling portion 512 at a central portion thereof.

The two connecting members 60 each have a first end 61 and a second end 62. The first ends 61 of the two connecting members 60 are connected to the second connecting ends 413 of the two linking members 41, respectively. The second ends 62 of the two connecting members 60 are connected to the coupling portions 512 of the two connecting rods 51, respectively.

FIG. 6 and FIG. 7 are schematic views in accordance with the preferred embodiment of the present invention when in use. When the user wants to install the dust collecting barrel 209 to the dust collector 200, the dust collecting barrel 209 is pushed to be located under the barrel cover 208. The operating rod 52 is pulled upward so that the control unit 50 is pivoted about the second pivot ends 22, meanwhile, the linking unit 40 is driven to swing by the connecting members 60. By the lever principle, the linking unit 40 uses the first pivot ends 12 as a fulcrum. When the control unit 50 drives the linking unit 40 to swing upward, the first connecting end 412 of the linking unit 40 is swung downward and the support member 31 is moved downward. The barrel cover 208 is pressed downward by the support member 31 to seal the dust collecting barrel 209. Through the elastic member 34, the dust collecting barrel 209 is closely sealed by the barrel cover 208.

As shown in FIG. 8, when the operating rod 52 is pulled to the highest point, the linking unit 40, the control unit 50 and the connecting members 60 almost form a straight line, so that the linking unit 40, the control unit 50 and the connecting members 60 form a toggle effect in a dead center state. The linking unit 40 can be retained after the user releases the operating rod 52 so that the support member 31 continues to press the barrel cover 208 down to complete the installation of the dust collecting barrel 209. The buckle mechanism 100 assists the user in installing the dust collecting barrel 209 quickly and easily, thereby greatly improving the working efficiency.

However, when the user wants to replace the dust collecting barrel 209, the operating rod 52 is pulled downward for the linking unit 40, the control unit 50 and the connecting members 60 to be released from the dead center state, and the second connecting ends 413 of the linking unit 40 are moved downward by the control unit 50 so that the first connecting ends 412 of the linking unit 40 are moved upward to lift the support unit 30 upward. The barrel cover 208 is disengaged from the dust collecting barrel 209 so that the user can pull out the dust collecting barrel 209 easily for replacing and cleaning the dust collecting barrel 209 conveniently.

It is to be noted that the position of the operating rod 52 is suitable for the user to operate the buckle mechanism 100 in a standing state. Therefore, the user can easily pull the operating rod 52 without bending or squatting. The buckle mechanism 100 may be directly mounted on either side of the dust collector 200 for the user to replace the dust collecting barrel 209 at the side mounted with the buckle mechanism 100, so that the dust collector 200 can be placed in a smaller space.

Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims. 

What is claimed is:
 1. A buckle mechanism of a dust collecting barrel of a two-stage dust collector, the buckle mechanism being disposed on the two-stage dust collector, the dust collector comprising a machine stand, the machine stand being provided with a wind guide barrel and a telescopic tube connected to a lower end of the wind guide barrel, another end of telescopic tube is provided with a barrel cover, the buckle mechanism being connected to the barrel cover for controlling the barrel cover to seal the dust collecting barrel, the buckle mechanism comprising: a first retaining seat, disposed at an inner side of the machine stand, two sides of the first retaining seat having first pivot ends, respectively; a second retaining seat, fixed to an outer side of the machine stand and parallel to the first retaining seat, two sides of the second retaining seat having second pivot ends, respectively; a support unit, disposed on the barrel cover, the support unit including a support member, the support member having a central through hole for the telescopic tube to pass therethrough to be fixed to the barrel cover, two sides of the support member having connecting portions, respectively; a linking unit, pivotally connected to the first retaining seat, the linking unit having first pivot portions corresponding to the first pivot ends, the linking unit being pivotally connected to the first pivot ends of the first retaining seat through the first pivot portions, one end of the linking unit having a first connecting end, the first connecting end being connected to the connecting portions of the support unit, another end of the linking unit having a second connecting end; a control unit, pivotally connected to the second retaining seat, one end of the control unit being pivotally connected to the second pivotal ends, another end of the control unit being transversely provided with an operating rod, two sides of the control unit each having a coupling portion at a central portion thereof; two connecting members, one end of each of the two connecting members being connected to the second connecting end of the linking unit, another end of each of the two connecting members being connected to the coupling portion of the control unit; thereby, the control unit being driven by the operating rod to actuate, the linking unit being driven to swing by the connecting members, and the support unit being driven to move the barrel cover up and down.
 2. The buckle mechanism of the dust collecting barrel of the two-stage dust collector as claimed in claim 1, wherein the first retaining seat is a U-shaped plate body, and one side of the first retaining seat, facing the machine stand, has a first retaining portion for the first retaining seat to be fixed to the machine stand.
 3. The buckle mechanism of the dust collecting barrel of the two-stage dust collector as claimed in claim 1, wherein the second retaining seat is a U-shaped plate body, and one side of the second retaining seat, facing the machine stand, has a second retaining portion for the second retaining seat to be fixed to the machine stand.
 4. The buckle mechanism of the dust collecting barrel of the two-stage dust collector as claimed in claim 1, wherein the support member is a rectangular plate body.
 5. The buckle mechanism of the dust collecting barrel of the two-stage dust collector as claimed in claim 1, wherein the barrel cover is vertically provided with a plurality of fixing rods, the support member is pivotally connected to the fixing rods, one end of each of the fixing rods is provided with a limit member, and the support member is positioned between the barrel cover and the limit members of the fixing rods.
 6. The buckle mechanism of the dust collecting barrel of the two-stage dust collector as claimed in claim 5, wherein the limit member is a nut so that the limit member is threadedly connected to the end of a corresponding one of the fixing rods, each of the fixing rods is sleeved with an elastic member, and the elastic members of the fixing rods are located between the barrel cover and the support member.
 7. The buckle mechanism of the dust collecting barrel of the two-stage dust collector as claimed in claim 6, wherein the elastic member is a spring, one end of the elastic member leans against the barrel cover, and another end of the elastic member leans against the support member.
 8. The buckle mechanism of the dust collecting barrel of the two-stage dust collector as claimed in claim 1, wherein the linking unit has two linking members, the two linking members have the first pivot portions at respective central portions thereof, and the first pivot portions are pivotally connected to the first pivot ends of the first retaining seat.
 9. The buckle mechanism of the dust collecting barrel of the two-stage dust collector as claimed in claim 8, wherein one end of each of the linking members is provided with the first connecting end, the first connecting ends of the two linking members are pivotally connected to the connecting portions of the support member respectively, another end of each of the linking members is provided with the second connecting end, and the second connecting ends of the two linking members are connected to the connecting members.
 10. The buckle mechanism of the dust collecting barrel of the two-stage dust collector as claimed in claim 1, wherein the two connecting members each have a first end and a second end, the first end is connected to the second connecting end of the linking unit, and the second end is connected to the coupling portion of the control unit. 